📄 json学习 - javascript - new - javaeye论坛.mht
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Date: Mon, 6 Oct 2008 14:13:25 +0800
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JSON =EF=BC=88JavaScript Object =
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=E5=8E=9F=E7=94=9F=E6=A0=BC=E5=BC=8F=EF=BC=8C=E8=BF=99=E6=84=8F=E5=91=B3=E7=
=9D=80=E5=9C=A8 JavaScript =E4=B8=AD=E5=A4=84=E7=90=86 JSON =
=E6=95=B0=E6=8D=AE=E4=B8=8D=E9=9C=80=E8=A6=81=E4=BB=BB=E4=BD=95=E7=89=B9=E6=
=AE=8A=E7=9A=84 API =E6=88=96=E5=B7=A5=E5=85=B7=E5=8C=85=E3=80=82 =
JSON=E7=9A=84=E8=A7=84=E5=88=99=E5=BE=88=E7=AE=80=E5=8D=95=EF=BC=9A=20
=
=E5=AF=B9=E8=B1=A1=E6=98=AF=E4=B8=80=E4=B8=AA=E6=97=A0=E5=BA=8F=E7=9A=84=E2=
=80=9C=E2=80=98=E5=90=8D=E7=A7=B0/=E5=80=BC=E2=80=99=E5=AF=B9=E2=80=9D=E9=
=9B=86=E5=90=88=E3=80=82=E4=B8=80=E4=B8=AA=E5=AF=B9=E8=B1=A1=E4=BB=A5=E2=80=
=9C{=E2=80=9D=EF=BC=88=E5=B7=A6=E6=8B=AC=E5=8F=B7=EF=BC=89=E5=BC=80=E5=A7=
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=E2=80=9D=E5=90=8E=E8=B7=9F=E4=B8=80=E4=B8=AA=E2=80=9C:=E2=80=9D=EF=BC=88=
=E5=86=92=E5=8F=B7=EF=BC=89=EF=BC=9B=E2=80=9C=E2=80=98=E5=90=8D=E7=A7=B0/=
=E5=80=BC=E2=80=99=20
=
=E5=AF=B9=E2=80=9D=E4=B9=8B=E9=97=B4=E4=BD=BF=E7=94=A8=E2=80=9C,=E2=80=9D=
=EF=BC=88=E9=80=97=E5=8F=B7=EF=BC=89=E5=88=86=E9=9A=94=E3=80=82=E5=85=B7=E4=
=BD=93=E7=BB=86=E8=8A=82=E5=8F=82=E8=80=83http://www.json.org/json-zh.htm=
l =
=E4=B8=BE=E4=B8=AA=E7=AE=80=E5=8D=95=E7=9A=84=E4=BE=8B=E5=AD=90=EF=BC=9A =
js =E4=BB=A3=E7=A0=81=20
<BR><BR><PRE class=3Djava name=3D"code">function showJSON() { =20
var user =3D =20
{ =20
"username":"andy", =20
"age":20, =20
"info": { "tel": "123456", "cellphone": "98765"}, =20
"address": =20
[ =20
{"city":"beijing","postcode":"222333"}, =20
{"city":"newyork","postcode":"555666"} =20
] =20
} =20
=20
alert(user.username); =20
alert(user.age); =20
alert(user.info.cellphone); =20
alert(user.address[0].city); =20
alert(user.address[0].postcode); =20
} =20
</PRE><BR><BR>=E8=BF=99=E8=A1=A8=E7=A4=BA=E4=B8=80=E4=B8=AAuser=E5=AF=B9=E8=
=B1=A1=EF=BC=8C=E6=8B=A5=E6=9C=89username, age, info, address =
=E7=AD=89=E5=B1=9E=E6=80=A7=E3=80=82=20
=
<BR>=E5=90=8C=E6=A0=B7=E4=B9=9F=E5=8F=AF=E4=BB=A5=E7=94=A8JSON=E6=9D=A5=E7=
=AE=80=E5=8D=95=E7=9A=84=E4=BF=AE=E6=94=B9=E6=95=B0=E6=8D=AE=EF=BC=8C=E4=BF=
=AE=E6=94=B9=E4=B8=8A=E9=9D=A2=E7=9A=84=E4=BE=8B=E5=AD=90 <BR>js =
=E4=BB=A3=E7=A0=81 <BR><BR><PRE class=3Djava name=3D"code">function =
showJSON() { =20
var user =3D =20
{ =20
"username":"andy", =20
"age":20, =20
"info": { "tel": "123456", "cellphone": "98765"}, =20
"address": =20
[ =20
{"city":"beijing","postcode":"222333"}, =20
{"city":"newyork","postcode":"555666"} =20
] =20
} =20
=20
alert(user.username); =20
alert(user.age); =20
alert(user.info.cellphone); =20
alert(user.address[0].city); =20
alert(user.address[0].postcode); =20
=20
user.username =3D "Tom"; =20
alert(user.username); =20
} =20
</PRE><BR><BR><BR>JSON=E6=8F=90=E4=BE=9B=E4=BA=86json.js=E5=8C=85=EF=BC=8C=
=E4=B8=8B=E8=BD=BDhttp://www.json.org/json.js=20
=
=E5=90=8E=EF=BC=8C=E5=B0=86=E5=85=B6=E5=BC=95=E5=85=A5=E7=84=B6=E5=90=8E=E5=
=B0=B1=E5=8F=AF=E4=BB=A5=E7=AE=80=E5=8D=95=E7=9A=84=E4=BD=BF=E7=94=A8obje=
ct.toJSONString()=E8=BD=AC=E6=8D=A2=E6=88=90JSON=E6=95=B0=E6=8D=AE=E3=80=82=
<BR>js =E4=BB=A3=E7=A0=81 <BR><BR><PRE class=3Djava =
name=3D"code">function showCar() { =20
var carr =3D new Car("Dodge", "Coronet R/T", 1968, "yellow"); =20
alert(carr.toJSONString()); =20
} =20
=20
function Car(make, model, year, color) { =20
this.make =3D make; =20
this.model =3D model; =20
this.year =3D year; =20
this.color =3D color; =20
} =20
</PRE><BR><BR><BR>=E5=8F=AF=E4=BB=A5=E4=BD=BF=E7=94=A8eval=E6=9D=A5=E8=BD=
=AC=E6=8D=A2JSON=E5=AD=97=E7=AC=A6=E5=88=B0Object <BR>js =
=E4=BB=A3=E7=A0=81 <BR><BR><PRE class=3Djava name=3D"code">function =
myEval() { =20
var str =3D '{ "name": "Violet", "occupation": "character" }'; =20
var obj =3D eval('(' + str + ')'); =20
alert(obj.toJSONString()); =20
} =20
</PRE><BR><BR>=E6=88=96=E8=80=85=E4=BD=BF=E7=94=A8parseJSON()=E6=96=B9=E6=
=B3=95 <BR>js =E4=BB=A3=E7=A0=81 <BR><BR><PRE class=3Djava =
name=3D"code">function myEval() { =20
var str =3D '{ "name": "Violet", "occupation": "character" }'; =20
var obj =3D str.parseJSON(); =20
alert(obj.toJSONString()); =20
} =20
</PRE><BR><BR><BR>=E4=B8=8B=E9=9D=A2=E4=BD=BF=E7=94=A8prototype=E5=86=99=E4=
=B8=80=E4=B8=AAJSON=E7=9A=84ajax=E4=BE=8B=E5=AD=90=E3=80=82 =
<BR>=E5=85=88=E5=86=99=E4=B8=80=E4=B8=AAservlet=20
=
(=E6=88=91=E7=9A=84=E6=98=AFservlet.ajax.JSONTest1.java)=E5=B0=B1=E5=86=99=
=E4=B8=80=E5=8F=A5=E8=AF=9D <BR>java =E4=BB=A3=E7=A0=81 <BR><PRE =
class=3Djava name=3D"code">response.getWriter().print("{ \"name\": =
\"Violet\", \"occupation\": \"character\" }"); =20
</PRE><BR><BR>=E5=86=8D=E5=9C=A8=E9=A1=B5=E9=9D=A2=E4=B8=AD=E5=86=99=E4=B8=
=80=E4=B8=AAajax=E7=9A=84=E8=AF=B7=E6=B1=82 <BR>js =E4=BB=A3=E7=A0=81 =
<BR><PRE class=3Djava name=3D"code">function sendRequest() { =20
var url =3D "/MyWebApp/JSONTest1"; =20
var mailAjax =3D new Ajax.Request( =20
url, =20
{ =20
method: 'get', =20
onComplete: jsonResponse =20
} =20
); =20
} =20
=20
function jsonResponse(originalRequest) { =20
alert(originalRequest.responseText); =20
var myobj =3D originalRequest.responseText.parseJSON(); =20
alert(myobj.name); =20
} =20
</PRE><BR><BR><BR>prototype-1.5.1.js=E4=B8=AD=E6=8F=90=E4=BE=9B=E4=BA=86J=
SON=E7=9A=84=E6=96=B9=E6=B3=95=EF=BC=8CString.evalJSON(),=20
=E5=8F=AF=E4=BB=A5=E4=B8=8D=E4=BD=BF=E7=94=A8json.js, =
=E4=BF=AE=E6=94=B9=E4=B8=8A=E9=9D=A2=E7=9A=84=E6=96=B9=E6=B3=95 <BR>js =
=E4=BB=A3=E7=A0=81 <BR><BR><PRE class=3Djava name=3D"code">function =
jsonResponse(originalRequest) { =20
alert(originalRequest.responseText); =20
var myobj =3D originalRequest.responseText.evalJSON(true); =20
alert(myobj.name); =20
} =20
</PRE><BR><BR><BR>JSON=E8=BF=98=E6=8F=90=E4=BE=9B=E4=BA=86java=E7=9A=84ja=
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